Alternating-current rectifier.



APPLICATION FILED JULY 3.1917.

Patented Mar. 26, 1918.

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OF PORTSMOUTH,

OHIO.

ALTEBNATIN G-CURREN T RECTIFIER.

Specification of Letters Patent.

Patented Mar. 26, 1918.

Application filed July 3, 1917'. Serial No. 178,455.

T 0 all whom it may concern.

Be it known that T, Bar F. Snrrz, a citizen of the United States, residing at Portsmouth, in the county of Scioto and State of Ohio, have invented certain new and useful Improvements in AlternatingCurrent Rectifiers, of which the following is a specification.

This invention relates to alternating current rectifier-s and more particularly to a device for changing the direction of an at ternatin current for the purpose of providing a direct current for chi-urging storage batteries and the like.

One of the objects of the invention is to provide an instrun'ient of this character having opposed armatures mounted in proper relation to a solenoid in series with the supply of alternating current whereby the armatures may be attracted and repelled alternately as the solenoid changes its polarity.

Another object of the invention is to provide an instrument of this character having similarly arranged armatures so related to the solenoid and with the component parts of the instrument tha U a unidirectional current will be obtained regardless of the frequency in the alternating current thus obviating the necessity of timing systems or the like and also compensating for any lag that may be produced under different circumstances.

A further object of this invention is the provision of an alternating current rectifier which consists of comparatively few parts and is simple in construction, but durable and well adapted to withstand the rough usage to which devices of this character are ordinarily subjected.

For a full description of the invention and the advantages and merits thereof, reference is to be had to the following description and the accompanying drawings,wherein is illustrated the preferred form of my invention, in which;

The figure illustrates a plan view of the instrument, the wiring thereof being shown diagrammatically.

Referring to the drawing, wherein is illustrated the preferred form of m inv nti n, and in which like numerals of reference indicate corresponding parts throughout the several views, a permanent horseshoe magnet 1 is mounted upon a base 2 and the magnet is broken to provide a gap 8 intermediate its ends to prevent short circuit as will hereinafter appear. This magnet 1 is attached and held to the base by the strips -1 preferably constructed of vulcanized fiber which are fastened to the base by the screws 5 and which have their ends engaged with the opposite legs of the horseshoe magnet to maintain the latter in position. Mounted upon the base 2 in any preferred manner, and spaced away from the ends of the magnet is a solenoid 6, the core 7 of which projects considerably beyond the ends of the solenoid as shown to advantage in the drawing.

On the out side edge of each leg of the magnet 1 is mounted a block 8 of fiber or other suitable insulating material which is attached to the leg by fastening a screw i}. A flat spring 10 is mounted upon each block 8 and is held thereto by a brass clamp block 11 through which a screw 12 passes and extends through the end of the spring and is s new threadedly mounted in the block 8. Thus, each spring is fastened to its corresponding block at one end and each spring is long enough to extend considerably beyond "the end of the core 7 so that the free end of the spring may be free to move back and forth. Fastened to each spring 10 is a strip 13 of metal, preferably iron, and the springs and these strips 13 thereby provide a pair of armatures extending from the legs of the magnet and in position to be acted upon by either end of the core 7.

The free extended end of each spring carries at its extreme terminal a pair of oppositely disposed contacts 14 and they are disposed between the spaced apart ends of the adjustable screws 15 which are mounted in suitable clips 16 fixed to the base 2.

The supply of alternating current is fed to the terminals 17 through the leads 18 and the terminals 17 are connected to the screws 12 by the conductors 19. Each conductor 19 is joined to a conductor 20 which leads to the solenoid 6 for the purpose of energizing the latter. The clips 16 at the right hand side of each spring are connected together by a connecting wire 21 while the clips 16 at the left hand side of each spring are connected by connecting wire 22. The terminals 28 which are at the end of the base opposite to the terminals 17, are connected to the wires 21 or 2-2 by the leads 24 and 25 respectively.

Since each spring with its contacts 14, projects into the gap between the pairs of screws 15, a connection can be made between the wires 21 or 22 and the conductors 19 by placing the contacts it into engagement with either or the screws for the reason that the brass clamp block 11 for each spring is connected to one of the conductors 19 thereby permitting current to pass through the spring to either of the leads 21 01 22 when engagement of the contacts is made with either of the screws 15. The operation, therefore, will be readily apparent since it vill be observed that the core 7 will attract and repel the armatures as the solenoid chan es its polarity with the reversal of the alternating current. Regardless of the frequency of the alternating current the movement of the armatures will be uniform and they will be properly timed so that the contact 14 will intermittently engage the ends of the adjustable screws 15 thus rectifying the alternating current so that it is discharged from the terminals 23 as direct cur rent.

From the foregoing it will be observed that a very simple and durable alternating current rectifier has b en provided, the details of which embody the preferred form. I desire it to be understood, however, that slight changes in the minor details of construction may be made without departing from the spirit of the invention or the scope of the claims hereto appended:

1. In a rectifier of the character described, the combination with a circuit supplying alternating current, a fixed horseshoe magnet, a solenoid, a pair of armatures mounted upon the legs of the said horseshoe magnet and extended into the field of the topics oi this patent may be obtained for five cents said solenoid, the said alternating current having conductors leading to the said armatures and said solenoid whereby intermittent attractions and repulsion ot the armatures will occur, and means for making intermittent contact with the said armatures in proportion to the frequency of the said alternating current.

2. In a rectifier of the character described, the combination of a circuit supplying alternating current, a fixed horse-shoe magnet, the said magnet being broken intermediate its ends to provide a gap, a pair of armatures mounted upon the legs 01"- the said magnet n ar the terminals thereof, the said armatures being provided at their terminals with contact members, a solenoid disposed beyond the field of the said magnet, the core of the said solenoid having its ends in proximity to the said armatures whereby the armature will be in the field of the said solenoid, the said alternating current including conductors connected to the said armatures and the said solenoid whereby intermittent attractions and repulsions of the armatures will occur from the pulsations of the alternating current, an independent circuit having terminals in position to engage the said contact members on the armatures for independently energizing the said independent circuits when the armatures are actuated.

In testimony whereof I atlix my signature in presence of two witnesses.

RAY F. SEITZ. lVitnesses l/V. A. FINNEY, A. J. FINNEY.

each, by addressing the Commissioner of Patents,

Washington, D. G. 

